The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 27, 2018
Filed:
Apr. 29, 2015
Applicant:
Lg Display Co., Ltd., Seoul, KR;
Inventors:
JuSeong Park, Goyang-si, KR;
DongYeon Kim, Busan, KR;
Assignee:
LG DISPLAY CO., LTD., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/31 (2006.01); G03H 1/22 (2006.01);
U.S. Cl.
CPC ...
G02F 1/31 (2013.01); G03H 1/2205 (2013.01); G03H 1/2286 (2013.01); G03H 1/2294 (2013.01); G03H 2001/2239 (2013.01); G03H 2001/2242 (2013.01); G03H 2223/18 (2013.01); G03H 2226/05 (2013.01);
Abstract
Provided is a hologram display apparatus according to an exemplary embodiment of the present invention. The hologram display apparatus includes: a detector configured to detect a position of a viewer; and a spatial light modulation panel that modulates a light to display a hologram. Further, a grade is determined on the basis of the detected position of the viewer. An optical path switching unit refracts the light from the spatial light modulation panel with the determined grade. A laser source of the hologram display apparatus generates the light with a compensated output on the basis of the grade.